KR102529182B1 - connector for implant - Google Patents

Abstract

In order to improve fastening stability, the present invention is for implants for implantation in the alveolar bone by attaching a fixture with a screw thread formed on the outer circumferential surface and recessed downward along the longitudinal direction at the upper end and having a fastening groove having a polygonal shape in the inner cross-section of the upper end side. A connector comprising: a body portion formed at a rear end of a shank portion connected to a handpiece providing rotational force; Doedoe provided at the front end of the main body portion, the cross-sectional shape is formed in a polygonal shape to match the inner surface of the upper end of the fastening groove portion; A first elastic fastening part protruded from the front end of the attaching protrusion and inserted into the lower end of the fastening groove part, and having a slit groove formed along the longitudinal direction so that an elastic means for providing fastening force by being pressed on the inner circumference of the fastening groove part is coupled; And a second elastic fastening portion including an elastic ring coupled to a restraining groove formed radially inward between the mounting protrusion and the first elastic fastening portion to provide fastening force by being fitted into the inner surface of the central portion in the longitudinal direction of the fastening groove portion. A connector for implantation is provided.

Description

Connector for implant {connector for implant}

The present invention relates to a connector for an implant, and more particularly, to a connector for an implant having improved fastening stability.

In general, an implant refers to a substitute that can replace human tissue when original human tissue is lost, but in dentistry, it refers to implanting artificially made teeth. That is, after planting a fixture made of titanium, etc., which does not have a rejection reaction to the human body to replace the lost tooth root, in the alveolar bone from which the tooth has been removed, it is a technology to fix the artificial tooth to restore the function of the tooth.

In detail, the implant procedure is performed by forming a hole in the alveolar bone using a drill and turning the fixture through a rotating means while inserting the fixture into the hole, and the screw formed on the outer periphery of the fixture is placed while forming a screw groove in the hole. In addition, an abutment mediating coupling with an artificial crown is coupled to the upper end of the fixture, and an end of a fastening screw penetrates the abutment but is screwed into a fastening groove formed inside the screw. At this time, a polygonal groove that is matched with a hexagonal polygonal projection formed on the outer circumference of the lower end of the abutment is formed at an upper end of the fastening groove so that the abutment is coupled to the fixture in an accurate direction.

Since these fixtures are parts that are directly implanted into the alveolar bone, they require a high level of cleanliness and hygiene, and are prepared by modifying the surface to be hydrophilic for stable osseointegration. Therefore, the fixture must be moved to the oral cavity in an attached state so that the hands of the operator do not reach it. To this end, a connector for an implant that transmits a rotational force in order to install the fixture into a perforation after moving the fixture to the oral cavity has been disclosed.

At this time, the conventional implant connector has one end connected to the handpiece and the other end formed with a mounting end that is molded with the polygonal groove of the fixture. That is, in a state in which the attaching end is molded into the polygonal groove, the attached state is maintained by frictional force to move the fixture to the oral cavity. And, when the handpiece is operated, as the attaching end is molded into the polygonal groove, rotational force is transmitted to the fixture through the implant and is placed in the hole.

However, in the conventional connector for implantation, the distal end portion inserted into the fixture and the body itself are formed as an integral body, and thus are formed in substantially the same color. Due to this, it is difficult to confirm whether the attaching end is accurately matched to the polygonal groove, and since the fixture is not firmly attached to the implant connector and is separated, the separated fixture falls into the treatment space and becomes contaminated. .

In addition, if the attaching end is inserted into the polygonal groove in a misaligned state, the rotational force of the handpiece is not accurately transmitted and the fixture is not properly installed. Moreover, there is a problem in that durability is deteriorated and service life is shortened due to abrasion of the attaching end as the attaching end rotates while being misalignedly fitted into the polygonal groove.

Korean Patent Publication No. 10-2003-0014341

In order to solve the above problems, an object of the present invention is to provide a connector for implants with improved fastening stability.

In order to solve the above problems, the present invention has a screw thread formed on the outer circumferential surface and recessed downward along the longitudinal direction at the upper end, and a communication portion is formed between a polygonal groove having a polygonal shape in the inner cross-section of the upper end and a screw groove formed at the lower end. A connector for an implant for attaching a fixture having a fastening groove and implanting it in an alveolar bone, wherein a shank connected to a handpiece providing rotational force is formed at a rear end, and a predetermined first color layer is formed on an outer surface thereof, and a body portion; It is provided at the front end of the main body and is shorted, and the cross-sectional shape is formed as a polygon that matches the polygonal groove, but when displaced from the polygonal groove, interference with the edge between each target surface of the polygonal groove causes the fixture The exposed state between the upper end and the front end surface of the main body is confirmed so that the attached state of the connector for implant and the fixture is recognized, and the brightness different from that of the first color layer is determined by the stepped surface as a boundary. or a mounting protrusion formed with a second color layer preset to have a color difference clearly distinguished from the main body by being contrasted in color; A C-shaped spring protrudes from the front end of the attaching protrusion to an outer diameter less than the inner diameter of the screw groove and is inserted into the screw groove, and the outer periphery is elastically deformed into the screw groove to provide a fastening force by being elastically pressed into the screw groove and making point contact. A first elastic fastening portion having a slit groove formed along the longitudinal direction so that the elastic means provided thereto is coupled; And a radially inner side between the mounting protrusion and the first elastic fastening part so as to provide a fastening force to which the fixture is attached through a double fastening structure provided in addition to the elastic force of the C-shaped spring by being forcibly fitted to the outer surface of the communication part. Including a second elastic fastening portion including an elastic ring coupled to the restraining groove formed recessed, wherein the communication portion has a rear inner diameter larger than the front end inner diameter, and the mounting protrusion is inserted into the polygonal groove at a distance less than the alignment interval. In order to prevent the elastic ring from being forcibly fitted into the communication part first, the outer circumference of the elastic ring gradually decreases in cross-sectional area from the rear edge toward the front edge, but is formed in a conical ring shape of the upper and lower sides of which one side is cut and opened. In the slit groove, a support partition wall extending toward the front end of the first elastic fastening part and having a rounded front end is formed in the slit groove so that the position where the C-shaped spring is inserted is constrained. It is formed to a predetermined thickness so that both ends opened in a compressed deformation state are supported, and a plastically deformed restraint end is formed at the divided front end of the first elastic fastening part to narrow the separation distance by a pressing force. connectors are provided.

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Through the above solution, the present invention provides the following effects.

First, as the mounting protrusion inserted into the fastening groove of the fixture is formed to clearly contrast with the main body in a different brightness or color, intuitively check the mounting protrusion exposed to the upper side of the fixture when incorrectly fastened, and adjust it to an accurate fastening state. Since it is possible, it is possible to prevent abrasion between the contact surfaces during separation and rotation of the fixture due to incorrect fastening.

Second, in addition to the elastic force of the C-shaped spring provided in the first elastic fastening part inserted into the screw groove, the elastic force of the elastic ring inserted into the communication part of the upper end of the screw groove is provided so that the fixture is stable through a double fastening structure. As it is attached, it is possible to fundamentally prevent the separation/falling of the fixture during the moving process, thereby minimizing disposal due to contamination.

Third, the central part of the slit groove into which the C-shaped spring is inserted is formed substantially solid through the supporting bulkhead to improve durability, and the elastic ring inserted into the communication part is formed in a conical shape with upper and lower sides, so that the mounting protrusion is in the polygonal groove. Reliability of fastening can be remarkably improved by preventing forcible fitting into the communicating part before alignment and insertion at regular intervals.

1 is an exemplary view showing an attached state of a fixture using a connector for implantation according to an embodiment of the present invention.
Figure 2 is an exploded perspective view showing a connector for an implant according to an embodiment of the present invention.
3a and 3b are exemplary diagrams illustrating a process of checking an attached state between a connector for implantation and a fixture according to an embodiment of the present invention.
4 is a front end side cross-sectional view of a connector for an implant according to an embodiment of the present invention.
5 is an exemplary view showing a connector for an implant according to an embodiment of the present invention from the front end side.
Figure 6 is an enlarged front end side showing a process of attaching a fixture using a connector for implantation according to an embodiment of the present invention.

Hereinafter, a connector for an implant according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary view showing an attached state of a fixture using a connector for implantation according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing a connector for implantation according to an embodiment of the present invention. At this time, it is preferable to understand that the front end direction of the implant connector 10 and the lower end direction of the fixture F correspond to each other, and the rear end direction and the upper end direction correspond to each other.

As shown in FIGS. 1 and 2, it is preferable to understand that the implant connector 10 according to the present invention is a tool used to insert a fixture F into an implantation hole formed in an alveolar bone after moving it to the oral cavity. do.

At this time, the fixture (F) is to replace the tooth root of the missing tooth, a screw thread (s) is formed on the outer peripheral surface. Then, a fastening groove 6 recessed downward along the longitudinal direction is formed at the upper end so that the abutment connecting between the fixture F and the artificial tooth is fixed. At this time, the cross-sectional shape of the inside of the upper end side of the fastening groove 6 is formed in a polygonal shape.

And, the implant connector 10 includes a main body 11, a mounting protrusion 12, a first elastic fastening part 13 and a second elastic fastening part 17.

The body portion 11 extends to a predetermined length and has a shank portion 11a formed at the rear end. The shank portion 11a is connected to a handpiece providing rotational force, and transmits rotational force for rotating the implant connector 10 in a state in which the fixture F is attached. At this time, as the fixture F is rotated together with the implant connector 10, it is rotated and placed into the placement hole.

Here, the main body portion 11 is formed to have an outer diameter exceeding at least the front end side of the outer diameter of the attaching protrusion 12 to be described later. Through this, a stepped surface 11b contacting the upper edge of the fixture F is formed along the front end surface of the body portion 11 where the mounting protrusion 12 protrudes. That is, the attaching protrusion 12, the first elastic fastening part 13, and the second elastic fastening part 17 protruding from the front end side of the body part 11 are the fastening grooves of the fixture F ( 6) The fixture (F) is attached to the implant connector 10 by being fastened through alignment and insertion into the inside and elastic force.

The central portion in the longitudinal direction of the body portion 11 functions as a grip portion, and at least one de-cut portion matching each alignment surface 12a of the attaching protrusion 12 to be described later may be formed. Accordingly, it is possible to easily check the fastening direction of the implant connector 10 . In addition, as the body portion 11 extends to a predetermined length, the front end of the body portion 11 to which the fixture F is substantially mounted is spaced apart from the grip portion. Therefore, it is possible to prevent contamination due to contact of the operator's hand with the fixture (F) in advance.

The attaching protrusion 12 is provided at the front end of the main body 11, and preferably has a polygonal cross-sectional shape so as to match the inner surface of the upper end of the fastening groove 6. Therefore, when each alignment surface 12a of the mounting protrusion 12 is molded to each opposing surface 6d of the polygonal groove 6a, the rotational force of the handpiece is stably transmitted to the fixture F. Through this, the fixture (F) is placed in the insertion hole as it rotates interlockingly with the connector 10 for implantation.

At this time, the attachment protrusion 12 of the connector 10 for implantation, the polygonal groove 6a of the fixture F, and the polygonal projection formed on the lower end of the abutment are formed in polygonal cross-sectional shapes that correspond to or match each other. And, as shown in the drawing, it may be formed of hexaprotrusions and hexagrooves that are combined therewith. In addition, a coating containing a metal alloy material to form a wear-resistant film on the outer surface of the attaching protrusion 12 so that wear on the outer surface is minimized when the attaching protrusion 12 is inserted into the polygonal groove 6a and rotational force is transmitted. The material can be surface treated or heat treated.

It is preferable that the attaching protrusion 12 protrude with a length corresponding to or smaller than the depth of the polygonal groove 6a. That is, in a state in which each alignment surface 12a of the mounting protrusion 12 is aligned and inserted so as to accurately match each opposing surface 6d of the polygonal groove 6a, the fixture F is placed on the stepped surface 11b. ), the upper edge of which is contacted.

On the other hand, the fastening groove (6) of the fixture (F) has a screw groove ( 6b) is formed. At this time, the polygonal groove 6a is formed to have an inner space in which the lower end of the abutment is inserted to a predetermined depth and molded. In addition, as the screw groove portion 6b is formed with an inner diameter into which the fastening screw penetrating the abutment in the longitudinal direction can be screwed, a step is formed according to a difference in cross-sectional area from the polygonal groove 6a.

Here, it is preferable that a communication portion 6c is formed between the polygonal groove 6a and the threaded groove portion 6b. In detail, the communication portion 6c is formed as a conical groove having a diameter at the rear end less than the inner diameter of the polygonal groove 6a and decreasing in diameter toward the front end communicating with the screw groove portion 6b. The communication part 6c not only guides the fastening screw to be stably inserted into the threaded groove part 6b, but also reinforces the fastening force between the implant connector 10 and the fixture F, which will be described below. It functions as a space where the elastic fastening part 17 is fitted.

Also, the first elastic fastening part 13 protrudes from the front end of the attaching protrusion 12 and is inserted into the lower end of the fastening groove part 6 . At this time, the slit groove 15 is formed along the longitudinal direction of the first elastic fastening part 13 so that the elastic means for providing fastening force by being pressed by the elastic on the inner circumference of the fastening groove part 6 is coupled.

In detail, the first elastic fastening part 13 protrudes to an outer diameter less than the inner diameter of the screw groove part 6b and includes an insertion protrusion part 14 divided into at least both sides through the slit groove 15. Preferably, the insertion protrusion 14 extends to a length less than the depth of the screw groove 6b.

Further, the elastic means is preferably provided with a C-shaped spring 16 inserted into the slit groove 15 and having an outer periphery elastically deformed to the threaded groove 6b to make point contact. At this time, the outer diameter of the C-shaped spring 16 exceeds the inner diameter of the screw groove portion 6b in a state where no external force is applied, but the inner diameter of the screw groove portion 6b in a state of being inserted into the screw groove portion 6b. Correspondingly, it is preferable to be provided with a size that can be elastically deformed. In addition, the C-shaped spring is preferably formed of heat-treated stainless steel, alloy, or spring steel.

That is, when the first elastic fastening part 13 is inserted into the screw groove 6b, the C-shaped spring 16 is elastically deformed in response to the inner diameter of the screw groove 6b, but is restored through restoring force. It is in point contact with the end of the screw thread (s) of the screw groove (6b). The attached state of the fixture (F) can be maintained through the elastic restoring force of the C-shaped spring (16).

The second elastic fastening part 17 includes an elastic ring 18 provided between the attaching protrusion 12 and the first elastic fastening part 13, and the inner surface of the central part in the longitudinal direction of the fastening groove part 6, that is, It is inserted into the communication part 6c to provide a fastening force. At this time, it is preferable that a ring-shaped restraining groove 17a recessed radially inward along the circumference between the attaching protrusion 12 and the first elastic fastening part 13 is formed so that the elastic ring 18 is coupled thereto.

Preferably, the restraining groove 17a has an inner diameter smaller than the outer diameter of the first elastic fastening part 13 . Therefore, the restraining groove 17a is formed as a stepped groove with the attaching protrusion 12 and the first elastic fastening part 13, respectively. Accordingly, when the elastic ring 18 is fitted into the restraining groove 17a, it is caught in each step and the position is constrained. Through this, in the process of separating the implant connector 10 after the fixture F is placed, the elastic ring 18 is caught in each step of the restraining groove 17a, and the connector 10 for implant The state bound to can be stably maintained.

The elastic ring 18 is preferably made of rubber, silicone, or a synthetic resin material having a predetermined elasticity, and is preferably made of a material for medical instruments that can minimize shrinkage, deformation, and discoloration during high-temperature/high-pressure sterilization.

That is, the implant connector 10 has a double fastening structure in which the C-shaped spring 16 is elastically fastened to the screw groove 6b and the elastic ring 18 is fitted into the buffer part. Fastening stability of the fixture (F) can be significantly improved. Through this, while the fixture (F) is attached using the implant connector 10 and is unnecessarily separated/falled during the moving process, the amount of disposal due to contamination of the fixture (F) is significantly reduced, making it economical.

3A and 3B are exemplary diagrams illustrating a process of checking an attached state between a connector for implantation and a fixture according to an embodiment of the present invention.

3A and 3B, a preset first color layer c1 is formed on the outer surface of the body portion 11, and a preset second color layer c2 is formed on the outer surface of the mounting protrusion 12. It is desirable to form In this case, it is preferable that the second color layer (c2) is formed to contrast with a different brightness or color from the first color layer (c1) based on the step surface (11b). That is, the connector 10 for implantation is formed so that the body portion 11 and the attaching protrusion 12 have a clearly distinguished color difference with the stepped surface 11b as a boundary.

Therefore, as shown in (a) of FIG. 3A, when each alignment surface 12a of the mounting protrusion 12 and each opposing surface 6d of the polygon groove 6a are aligned in the correct direction, the stepped surface 11b It comes into contact with the upper edge of the fixture F, and the mounting protrusion 12 is completely inserted into the polygonal groove 6a.

At this time, as shown in (b) of FIG. 3B, when the mounting protrusion 12 and the polygonal groove 6a are misaligned, the gap between the corner portion between the alignment surfaces 12a and the corner portion between the opposing surfaces 6d Due to the interference, the attaching protrusion 12 is not completely inserted into the polygonal groove 6a. Accordingly, the mounting protrusion 12 is exposed between the upper end of the fixture F and the stepped surface 11b.

Here, since the first color layer (c1) and the second color layer (c2) are clearly contrasted and are formed in brightness and color that are distinguished from the naked eye, the mounting protrusion 12 is formed on the body portion 11 and the body portion 11. It is possible to intuitively check the exposed state between the fixtures (F). Therefore, the operator can accurately recognize the attached state between the fixture F and the connector 10 for implantation. In addition, as the operator rotates the implant connector 10 and adjusts the fastening direction, the attaching protrusion 12 can be accurately aligned and matched to the polygonal groove 6a.

Through this, it is possible to prevent a problem in which rotational force is not accurately transmitted to the fixture F due to incomplete fastening of the attaching protrusion 12 to the polygonal groove 6a. In addition, since the attachment protrusion 12 and the polygonal groove 6a are misalignedly engaged to prevent abrasion of the inner and outer surfaces and corners during rotation, the lifespan of the implant connector 10 can be remarkably improved.

In this case, the second color layer (c2) may be formed with a higher brightness than the first color layer (c1). For example, the first color layer (c1) may be coated on the outer surface of the main body part 11 with a coating layer of a low brightness color such as black or dark gray, and the second color layer (c2) may be the color of the metal material. It can be formed in a silver or light gray color as it is.

4 is a cross-sectional view of a connector for implant according to an embodiment of the present invention on the front end side, and FIG. 5 is an exemplary view showing the connector for implant according to an embodiment of the present invention from the front end side.

Referring to FIGS. 4 and 5 , it is preferable that a support partition wall 14a extending toward the front end of the first elastic fastening part 13 is formed inside the slit groove 15 . In addition, it is preferable that a plastically deformed restraining end 14b is formed at the divided front end of the first elastic fastening part 13 so that the separation distance is narrowed by a pressing force.

In detail, the support partition wall 14a is formed in the longitudinal center between the insertion protrusions 14 divided by the slit grooves 15, and has a thickness w less than the outer diameter of the insertion protrusions 14 and the It is formed shorter than the protruding length of the insertion protrusion 14. That is, the slit groove 15 is formed as a U-shaped groove corresponding to the distance between the outer surface of the insertion protrusion 14 and the outer surface of the support partition 14a, and the insertion protrusion 14 is the support partition ( Through 14a), the longitudinal center is formed substantially solid.

At this time, the support bulkhead 14a is formed so that the front end 14r is rounded, and the C-shaped spring 16 is inserted into the screw groove 6b to support the open ends 16a in a compressed and deformed state. It is preferable to be formed with a set thickness (w). That is, the C-shaped spring 16 is coupled so that the support partition 14a is inserted between the open ends 16a, and the inside of the central portion of the C-shaped spring 16 is the front end of the support partition 14a ( 14r) is supported. At this time, as both ends 16a of the C-shaped spring 16 are formed in a rounded shape so as to protrude outward from the insertion protrusion 14, they are spaced apart from the outer surface of the support partition wall 14a.

Accordingly, when the C-shaped spring 16 is elastically deformed, it is supported by the distal end 14r of the support bulkhead 14a to prevent bending. In addition, when the C-shaped spring 16 is compressed and deformed corresponding to the inner diameter of the screw groove 6b, both ends 16a, which are opened, come into contact with both side surfaces of the support bulkhead 14a.

At this time, as the both ends 16a of the C-shaped spring 16 come into contact with both sides of the support bulkhead 14a to limit the compression width, the restoring force is intensively transmitted to the screw groove 6b, so that the fastening force can be further improved. there is. In addition, since the C-shaped spring 16 is prevented from being excessively compressed, the fastening force with the threaded groove 6b through elastic deformation can be maintained for a long period of time.

And, the restraining end 14b is formed by press-fitting the front end of the insertion protrusion 14 divided through the slit groove 15 using a press-fitting tool so that the separation distance between the insertion protrusions 14 is narrowed. . Through this, the position of the C-shaped spring 16 is constrained between the front end 14r of the support partition wall 14a and the restraining end 14b. Therefore, when the implant connector 10 is separated from the fixture F, the C-shaped spring 16 can be prevented from being unnecessarily separated or separated from the first elastic fastening part 13 . Through this, since the C-shaped spring 16 remains in the threaded groove 6b, the fastening screw can be prevented from being erroneously fastened, so fastening reliability can be remarkably improved.

At this time, since the tip side of the first elastic fastening part 13, that is, the tip side of the insertion protrusion 14, does not require a high degree of dimensional accuracy, post-processing such as press-fitting is possible. Therefore, since a complex and fine manufacturing process, such as a separate horizontal hole processing at the front end of the insertion protrusion 14, is not required to restrain the C-shaped spring 16, manufacturing convenience can be remarkably improved. .

Meanwhile, in the present invention, although the C-shaped spring 16 is coupled to one slit groove 15 as an example, it has been described and illustrated, but the slit groove 15 is attached to the front end of the first elastic fastening part 13. It is formed in a cross shape and two C-shaped springs 16 may cross and be coupled to the slot groove 15 of the cross shape.

6 is an enlarged view of the distal side showing a process of attaching a fixture using a connector for implantation according to an embodiment of the present invention.

Referring to FIG. 6, the outer circumference of the elastic ring 18 is preferably formed in a conical ring shape of upper and lower sides with a cross-sectional area gradually reduced from the rear edge toward the front edge 18a, but one side is cut and opened. Therefore, since the outer surface of the elastic ring 18 is in surface contact with the inner surface of the communication portion 6c as a whole and is forcibly fitted through elasticity, the fastening force between the implant connector 10 and the fixture F is further improved. can

At this time, the inner diameter of the communication portion 6c is formed to be larger than the inner diameter of the front end, and the outer diameter of the rear edge is larger than the outer diameter of the front edge 18a so that the elastic ring 18 is molded thereto. Therefore, when the mounting protrusion 12 is inserted into the polygonal groove 6a at a distance less than a predetermined alignment interval m, the front edge 18a of the elastic ring 18 moves to the rear end of the communication portion 6c. corresponds to the side.

That is, since the inner diameter at the rear end of the communication portion 6c is larger than the outer diameter of the edge 18a at the front end of the elastic ring 18, before the mounting protrusion 12 is completely aligned and inserted into the polygonal groove 6a. It is possible to prevent the elastic ring 18 from being forcibly fitted into the communication portion 6c first. Through this, it is possible to prevent the fixture F from being attached to the implant connector 10 in a state in which the attaching protrusion 12 is incompletely fastened to the polygonal groove 6a.

In addition, when the connector 10 for implantation is pulled upward to separate the implant connector 10 after the fixture F is placed, the entire outer surface of the elastic ring 18 moves from the inner circumference of the communication portion 6c to the whole at the same time. can be separated Therefore, it is possible to prevent the elastic ring 18 from being separated from the restraining groove 17a when the implant connector 10 is separated, and when the abutments are sequentially coupled, the separated elastic ring 18 can be prevented. Misconnection due to (18) can be prevented.

On the other hand, terms such as "comprise", "comprise", "have" or "have" described above mean that the corresponding component may be present unless otherwise stated, It should be construed as being able to further include other components rather than excluding components. All terms, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs, unless defined otherwise. Commonly used terms, such as terms defined in a dictionary, should be interpreted as being consistent with the contextual meaning of the related art, and unless explicitly defined in the present invention, they are not interpreted in an ideal or excessively formal meaning.

As described above, the present invention is not limited to the above-described embodiments, and it is possible to modify and implement the present invention by those skilled in the art without departing from the scope claimed in the claims of the present invention. And, such modifications fall within the scope of the present invention.

10: connector for implant 11: main body
12: mounting protrusion 13: first elastic fastening part
15: slit groove 16: elastic means
17: second elastic fastening part 18: elastic ring
F: fixture 6: fastening groove

Claims (5)

Attach a fixture with a screw thread formed on the outer circumferential surface and a coupling groove formed with a communication part between the polygonal groove formed at the upper end along the longitudinal direction and the internal cross-sectional shape of the upper end formed in a polygonal shape and the screw groove formed at the lower end. In the implant connector for implantation,
A shank portion connected to the handpiece providing rotational force is formed at the rear end, and a predetermined first color layer is formed on the outer surface of the body portion;
It is provided at the front end of the main body and is shorted, and the cross-sectional shape is formed as a polygon that matches the polygonal groove, but when displaced from the polygonal groove, interference with the edge between each target surface of the polygonal groove causes the fixture The exposed state between the upper end and the front end surface of the main body is confirmed so that the attached state of the connector for implant and the fixture is recognized, and the brightness different from that of the first color layer is determined by the stepped surface as a boundary. or a mounting protrusion formed with a second color layer preset to have a color difference clearly distinguished from the main body by being contrasted in color;
A C-shaped spring protrudes from the front end of the attaching protrusion to an outer diameter less than the inner diameter of the screw groove and is inserted into the screw groove, and the outer periphery is elastically deformed into the screw groove to provide a fastening force by being elastically pressed into the screw groove and making point contact. A first elastic fastening portion having a slit groove formed along the longitudinal direction so that the elastic means provided to be coupled thereto; and
Inwardly in the radial direction between the mounting protrusion and the first elastic fastening part so as to provide fastening force to which the fixture is attached through a double fastening structure that is forcibly fitted to the outer surface of the communication part and provided in addition to the elastic force of the C-shaped spring. Including a second elastic fastening portion including an elastic ring coupled to the recessed restraint groove,
The inner diameter of the communication part is formed to be larger than the inner diameter of the front end, and when the mounting protrusion is inserted into the polygonal groove less than the alignment interval, the outer surface of the elastic ring prevents the elastic ring from being forcibly fitted into the communication part first. The cross-sectional area gradually decreases from the rear edge toward the front edge, but is formed in a conical ring shape of upper and lower sides with one side cut and opened,
A support bulkhead is formed in the slit groove so that the position where the C-shaped spring is inserted is restrained, and the support partition wall extends toward the front end of the first elastic fastening part and has a rounded front end. It is formed to a predetermined thickness so that both ends opened in a deformed state are supported, and a plastically deformed restraint end is formed at the divided front end of the first elastic fastening portion to narrow the separation distance by a pressing force. . delete delete delete delete

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